linux-toradex.git/include/asm-x86/msr.h, branch v2.6.27.27

x86: msr: fix bogus return values from rdmsr_safe/wrmsr_safe

2008-08-26T05:39:15+00:00

Impact: bogus error codes (+other?) on x86-64

The rdmsr_safe/wrmsr_safe routines have macros for the handling of the
edx:eax arguments.  Those macros take a variable number of assembly
arguments.  This is rather inherently incompatible with using
%digit-style escapes in the inline assembly; replace those with
%[name]-style escapes.

This fixes miscompilation on x86-64, which at the very least caused
bogus return values.  It is possible that this could also corrupt the
return value; I am not sure.

Signed-off-by: H. Peter Anvin

x86: msr: propagate errors from smp_call_function_single()

2008-08-26T00:45:48+00:00

Propagate error (-ENXIO) from smp_call_function_single().  These
errors can happen when a CPU is unplugged while the MSR driver is
open.

Signed-off-by: H. Peter Anvin

x86: add memory barriers to wrmsr

2008-07-08T11:10:24+00:00

wrmsr is a special instruction which can have arbitrary system-wide
effects.  We don't want the compiler to reorder it with respect to
memory operations, so make it a memory barrier.

Signed-off-by: Jeremy Fitzhardinge 
Cc: xen-devel 
Cc: Stephen Tweedie 
Cc: Eduardo Habkost 
Cc: Mark McLoughlin 
Signed-off-by: Ingo Molnar

x86: shift bits the right way in native_read_tscp

2008-06-26T12:49:17+00:00

native_read_tscp shifts the bits in the high order value in the
wrong direction, the attached patch fixes that.

Signed-off-by: Max Asbock 
Acked-by: Glauber Costa 
Signed-off-by: Ingo Molnar

x86: re-add rdmsrl_safe

2008-04-17T15:41:30+00:00

RDMSR for 64bit values with exception handling.

Makes it easier to deal with 64bit valued MSRs. The old 64bit code
base had that too as checking_rdmsrl(), but it got dropped somehow.

Signed-off-by: Andi Kleen 
Cc: andreas.herrmann3@amd.com
Cc: mingo@elte.hu
Signed-off-by: Thomas Gleixner 
Signed-off-by: Ingo Molnar

include/asm-x86/msr.h: checkpatch cleanups - formatting only

2008-04-17T15:41:25+00:00

Signed-off-by: Joe Perches 
Signed-off-by: Ingo Molnar

x86: use _ASM_EXTABLE macro in include/asm-x86/msr.h

2008-02-04T15:47:58+00:00

Use the _ASM_EXTABLE macro from , instead of open-coding
__ex_table entires in include/asm-x86/msr.h.

Signed-off-by: H. Peter Anvin 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

x86: fix sched_clock()

2008-01-30T12:32:40+00:00

[ andi@firstfloor.org: build fix ]

Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

x86: move native_read_tsc() offline

2008-01-30T12:32:39+00:00

move native_read_tsc() offline.

Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner

x86: cleanup write_tsc

2008-01-30T12:32:05+00:00

write_tsc() does not need to be enclosed in any paravirt closure,
as it uses wrmsr(). So we rip off the duplicate in msr.h
and the definition from paravirt.h

Signed-off-by: Glauber de Oliveira Costa 
Signed-off-by: Ingo Molnar 
Signed-off-by: Thomas Gleixner